March 12, 2010

Measuring trace amounts of TNT on a fingerprint

Posted: Mar 12, 2010 | 0 min 15 sec

ASU scientists have hit on a new method to significantly improve the detection of trace chemicals important in such areas as national security, human health and the environment.

For example, the method can be used to measure trace amounts of TNT on a fingerprint. The ridges of a single fingerprint can be seen against an orange background. As a potential is applied, trace amounts of TNT come into view, ranging in color from bright yellow dots to black, depending on the concentration.

Video Archive

20090716_moonwalk.jpg
Jul 16, 2009 | 3 min 41 sec
robinson.jpg
Jun 17, 2009 | 1 min 42 sec
wikiwire.jpg
Jun 11, 2009 | 59 min 30 sec
20090531_muphy.jpg
May 31, 2009 | 9 min 22 sec
20090513_stadium.jpg
May 27, 2009 | 2 min 31 sec
20090513_crowintro.jpg
May 14, 2009 | 7 min 47 sec
teacher and students in a Navajo language class at ASU
Apr 17, 2014 | 3 min 46 sec
children look through microscope
Apr 10, 2014 | 1 min 34 sec
simulation
Mar 30, 2014 | 0 min 46 sec
ASU professor and student looking at computer screen
Feb 13, 2014 | 3 min 6 sec
sidewalk chalk
Jan 10, 2014 | 1 min 09 sec
student holding whiteboard that says "science and policy"
Dec 17, 2013 | 6 min 5 sec
ASU professor and student looking at computer screen
Feb 13, 2014 | 3 min 6 sec
immigration forum
Apr 25, 2013 | 89 min 41 sec
Rebecca Tsosie
Feb 07, 2013 | 3 min 29 sec
Sudhir Kumar
Feb 07, 2013 | 3 min 10 sec
Ron Adrian
Feb 07, 2013 | 3 min 22 sec
ASU Discovers
Oct 24, 2012 | 24 min 19 sec
Hydrology research takes student to top of the world
Jan 09, 2011 | 2 min 26 sec
Coerced Confessions
Jan 07, 2011 | 10 min 15 sec
New Life on Earth
Jan 07, 2011 | 15 min 49 sec
Brain-Computer Interface
Jan 07, 2011 | 11 min 52 sec
Focus on Sustainability: A HORIZON Special
Jan 07, 2011 | 26 min 13 sec
History Detective sheds light on Arizona's early years
Jan 07, 2011 | 13 min 38 sec
Picture 1.jpg
Aug 31, 2009 | 19 min 7 sec
spring.jpg
Aug 27, 2009 | 4 min 33 sec
Picture 1.jpg
Aug 26, 2009 | 2 min 11 sec
20090919_asuspot.jpg
Aug 19, 2009 | 30 sec
randallcerveny.jpg
Aug 19, 2009 | 59 sec
randallcerveny.jpg
Aug 19, 2009 | 37 sec
Picture 3.png
Jul 23, 2009 | 2 min 32 sec
20090721_cronkitemoon.jpg
Jul 21, 2009 | 11 min 57 sec
20090721_cronkitekaet.jpg
Jul 21, 2009 | 10 min 59 sec
20090720_globalresolve.jpg
Jul 20, 2009 | 2 min 20 sec
20090716_moonwalk.jpg
Jul 16, 2009 | 3 min 41 sec
robinson.jpg
Jun 17, 2009 | 1 min 42 sec